Material	Radiata Pine Thermowood
Minimum Order	100 Linear Meters (any order under this amount will be cancelled, this is due to the machining process for this timber). We can do any quantity of cladding in British Cedar, British Larch or Treated Redwood
Width	144mm
Thickness	19mm
Face Coverage	133mm
Grade	???
Treatment	Untreated, Radiata Pine Thermowood offers excellent durability and natural resistance to decay and insects, making it an ideal choice for external use. Its enhanced thermal modification process improves its stability and resistance to weathering, ensuring reliable performance in exposed outdoor environments. To maintain its natural appearance and extend its lifespan, we recommend applying a suitable wood oil or stain, such as OSMO. This helps to preserve its rich, warm tones while providing additional protection against cracking and the effects of UV exposure. Staining enhances the timber's durability, ensuring it retains its structural integrity and aesthetic appeal over time, making Redwood Thermowood a reliable and long-lasting option for outdoor projects.
Finish	Planed Timber
Length	Available in 0.9m, 1.2m, 1.8m, 2.4m, 3.0m, 3.6m, 3.9m and 4.2m
Buying Guide	Unsure which cladding to go for? Take a read of our full Cladding Buying Guide
Type	Softwood
Origin	New Zealand
Durability	Class 2
Movement Class	Small
Knots	Variable
Colour	Deep, rich brown tones that weather to an elegant silver-grey
Modified Timber	Yes, thermally modified
Fixings	Stainless Steel
Recommended Wastage	15-20% due to Brittleness
Key Points	Heat treatment significantly increases durability and stability. Low moisture absorption, reducing the risk of warping or shrinking. Highly stable under varying weather conditions. Enhanced lifespan due to improved resistance to decay.
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Radiata Pine Thermowood Tongue and Groove (T&G) cladding offers a durable and sustainable solution with a clean, seamless finish. Through an advanced heat-treatment process, Thermowood achieves natural resistance to rot, decay, and insects, making it an eco-friendly alternative to chemically treated timber.

The T&G profile provides a precise, interlocking fit, ensuring excellent weather resistance and a smooth, refined appearance that complements both traditional and modern designs. Thermowood’s enhanced stability minimizes warping, swelling, and shrinking, delivering a consistent, high-quality finish that stands the test of time.

With its rich, warm tone, Radiata Pine Thermowood can be left untreated to develop a natural grey patina or stained to match your design preferences, adding versatility to its applications. Ideal for exterior facades or interior feature walls, it is the perfect choice for builders and architects seeking a blend of durability, aesthetic appeal, and environmental responsibility.

Key Facts

• Tongue & Groove Profile
• Enhanced Durability
• Eco-Friendly
• Dimensional Stability

Other Options 

• Redwood Thermowood - Thermowood undergoes a heat treatment process that enhances its durability and stability, making it highly resistant to moisture and rot while being eco-friendly and sustainable

• Redwood Thermowood Loglap - Profiled Version of the cladding
• Redwood Thermowood Shadow Gap - Profiled Version of the cladding
• Redwood Thermowood 6" x 1" Board - Profiled Version of the cladding
• European Larch T&G - Profiled Version of the cladding